Convertible power drill



Mar. 13, 1923. 1,448,507. C. L. STUEBER.

CONVERTIBLE POWER DRILL.

LIQ s A Mar., 13, 1923.

4 SHEETS-SHEET 2.

FILED JULY l0, |920.

Ma1-.13,1923, 1,448,507;,; Y, C. L- STUEBIR.

CONVERTIBLE PGWER DRILL. l

FILED JULY 1o. 1920. 4 SHEETS-#Hrm 3.

Mar. 13, 1923.

ini w/ mM// 4 SHEETS-SHEET 4,`l

C. L. STUEER.

coNvf-:RHBLE POWER mm1.

FILED JULY l0 1920 R NSM@ 4 .gi A ,4f/Aff,

Patented ar. i3, i923.

CONRAD L. ST'UEBER, 0F AURORA, ILLINOIS.

GONVERTIBLE Application led July 10,

To all 'whom t may concern Be it known that l, CONRAD L. Simmern, a citizen of the United. States, and a resident or' Aurora, in the county of Kane andv State of Illinois, have invented certain newl and useful Improvements in a Convertible Power Drill, oi which the following is a description, reference being had to the accompanying drawings, which form a part of my specilication.

My invention relates to a drill adapted to be operated by any suitable source of power and primarily intended for track-drilling purposes, but which may be readily converted into a bench drill, the drill being detachably mounted on a suitable rail-carriage in such manner that it may be easily detached from the carriage and employed for bench or other drilling purposes; while the carriage may in turn be employed for other uses.r

rlhe object of my invention is to provide a power-operated drill which may be swung into or arranged at any angle or degree intermediate of a vertical and a horizontal plane to adapt the drill :tor track rail drilling so that the drilling mechanism may be positioned to permit drilling at the desired point relative to the top oi the rail.

The purpose of my invention is to provide a construction which may be manually transported along the rail when employed as a track rail drill; while the drill-spindle may be operated atvarious speeds through the interchange of power transmitting gears which enable different speed ratios to be obtained and increased po-wer transmitted to the drill-spindle, when large drills are employed, or higher speed provided when employing smaller drills. In other words, the invention contemplates a device so arranged that it may be used as a multiple speed power unit whereby drill-spindles or shafts may be driven from one or more of the power-transmitting gears which are so formed that operative connection with a shaft or drill-spindle may be made; while at the same time the drill-spindle actuating mechanism is so formed that the drill may, when desired, be manually operated Jfor certain drilling operations without placing the motor or engine in operation.

Another object ot my invention is to provide a power drill having means 'whereby a lubricant or suitable. cooling medium,

POWER DRILL.

1920. Serial No. 395,197.

will be so employed and held in suspension at the opposite side of the rail, that penetration of the rail or metal by the drill-bit will release the lubricant, or cooling medium, and completely immerse the drill-bit at a moment when the cooling of the bit is most desired; while at thesame time rail-engag ing means are provided which will engage with the side ot the rail opposite to that on which the drill-mechanism is located; said means being so arranged that it may be quickly actuated into disengaging position to permit ythe ready removal of the drill and carriage from the track when occasion requires.

f rPhe above enumerated objects and advantages, as well as other advantages inherent in the construction, will be more readily compii'ehended from the detailed description of the accompanying drawings, wherein Figure l is a topy plan view of my improved convertible power drill shown in position on a track rail.'

Figure 2 is a side elevation of the construction as illustrated in Figure l.

Figure 3 is an enlarged cross-sectional view taken on the line 3-3 of Figure 2 looking in the direction of the arrows.

Figure 4t is an enlarged sectional view taken on the line 4.-4 of Figure l, looking p in the direction of the arrows.

Figure 5 is aI detail view, in elevation, ot a part of the motorcasing and mounting.

Figure 6 is a detail View, in sectional elevation, taken on the line 6-6 of Figure 5, looking in the direction of the arrows.

-Figure 7 is a cross sectional view taken on the line 7 7 of Figure 6, looking in the direction. of the arrows.

F injure S is a detail view, in elevation and partial section, of the rail-engaging mechanisir.. and cooling medium holding and directing means; the view being taken on the line 8-8 of Figure 3 and looking in the direction of the arrows.

Figure 9 is a detail sectional View taken on the line 9 9 of Figure 3, looking in the direction of the arrows.

Figure 10 is an enlarged detail sectional view of the drill-spindle and housing.

Figure l1 is a side elevation of my improved drill shown converted into a power operated bench drill.

My improved power drill is primarily adapted Jfor drilling track rails and in the specific embodiment of the invention as disclosed in the first four figures ofthe drawings, it comprises a suitable carriagewhereby the drill may be transported along the rail. The rail carriage is shown preferably somewhat of Wheel-barrow construction and consists of the side frame members 2OA terminating at the free ends in handle portions, While the opposite'ends ofthe frame members converge and are secured to a suity able bracket or casting` 21 which is formed to` receive a suitable track-engaging Wheel 22 asshown in Figures 1 and 2gthe side frame members 20, 20 being provided With suitable cross-members or braces, as at 23, some of which provide support for a 'suitable tank 24 adapted to carry a supply of Water, or other drill-'cooling mediuml or lubricant.` TheV drill mechanism and motor, whereby power is provided for the' drill mechanism, areI preferably suspended beneathy the cariage, as shown in Figures 2 to 4'; and the drill mechanism comprises the main side frame members 25, (one'on each side of the motor) which are formed so as to permit one end of each frame member 25 to extend across the top o-f the rail indicated at A, see Figures 3 and 4; and this l portion of the frame members is slotted as indicated at v26 to receive a suitable clampbolt or member 27 whereby a bracket or carrier 28 is adj'ustably secured to the main frame members 2 5. The bracket 28, Which is disposed between the side frame members 25, is provided with rollers 29 Which are adapted to ride along the rail operated on and act as a'support for the drill frame and therefore also constitute a support for the rear or `drill end of the track carriage. The

:bracket 28 is provided with longitudinal slots 30, through Which` the clamp bolts 27 are disposed; theslots 26 and 30 permitting adjustment lengthwise of the drill frame y, members 25, as Well as vertical adjustment of the bracket 28to regulate the height ofv thedrill-frame and therefore ofthedrillspindle, relative to the head of the rail operated-on. `The drill-frame members 25 at the ends removed from the rail-engaging 5'0"v portion, are each provided with a large, substantially circular opening` to receive the ends of the engine, that is the drill frame 25 on one side has an opening adapted to receive the crank-shaft case, Whilethe other drill frame 25 has an opening, sufficient to receive a boss formed on the engine-casing. The purpose in soI constructing the frame members and mounting the motor, is to permit the engine or motor to be rotated in the drill-frame; the rotation being about an axisl concentric Vwith the crank-shaft,

vvhich permits the `motor or engine to be rotated in the drill-frame 25 through the arc of a circle. The motor orv engine .is maintained in its adjusted position by suitable clips 31 and 32, see Figure 3, Which extend through the frame members 25 and from clamping relation With the motor or engine to hold it against accidental rotation. ln order to .swing the motor, indicated at "34, through the desired arc of a circle, it-isnecessary to release the clips 31 and 32, thereby releasing the motor (which may -be a gasoline or any other suitable type) Without interfering With its operative relation with the drilling mechanism.y The main frame members 25 have a tubular casing orhousing 35 suspended therefrom, and this housing is provided with a Worm 36, see Figure 4, and a Worm-gear 37 which meshes with the Worm 36. l/Vorm-gear 37 is slidably keyed on drill-spindle 38, to-permit the latter yto be rotated thereby and have longitudinal movement Within a sleeve 39. One en d of the sleeve 39 is internally threaded and is also preferably formed integral With a beveled gear 40; While the internally threaded portion of sleeve 39 meshes with an externally threaded sleeve 41, which is slidably vkeyed in the vend of the casing 35 at 41a. This end of the housing 35 is shown provided with suitable antifriction bearings at 42 -adapted to receive the end thrust of sleeve 39 and its integral gear 40; vvhilethe opposite end of the sleeve 39 takes against the anti-friction bearings 43 arranged in abutting relation with the hub of worm-gear 37. The end of the drill spindle 38, which is inserted-in the threaded sleeve 41, is shown' reduced and the end thereof is provided with an anti-friction or ball-bearing at 44, see Figures 4 and 10,v

adapted to take the end thrust; the ballv rbearing 44 being maintained in place by a The bevel gear 40-is arranged in mesh' with a gear 46 provided with a hub which receives the-end 47 of a hand-operated shaft 48 The shaft section 47is coupled to the main portion of the hand operated shaft 48 by a suitable coupling, as at 49, Which enables the shaft-sections toA be disconnected when desired for certain operations', especially when the drill is intended to be used as a bench drill. `he hub ofY gear 46- receives the end of the shaft-section 47 and is secured thereto against rotation; while the hublot the gear 46 is rotatably mounted in the elongated bearing-nut 50 which screws into the drillrmechanism housing 35; the bearing nut 50 being held against accidental rotation by a suitable lock nut 51. The

shaft 4S is provided with a suitable handwheel 52, whereby the drill-spindle may be fed into drilling position; the feeding operation being controlled through proper rotation of handle-wheel 52 and therefore of bevel-gear 46 which causes gear 40, with its integral sleeve 39, to be so rotated as to cause the sleeve 4l through the meshing threads on both sleeves, to force the drillspindle forward or outwardly which is permitted by the sliding relation of spindle 38 with the worm-gear 37; rotation of the spindle being induced by the worm-gear 37 when the latter is actuated.

The drill is maintained in proper relation with the rail operated on by a rail-engaging means or hook-member 53. rlhe member 53 is preferably bifurcated or of skeleton formation, as more clearly disclosed in Figure 6, and provided with a hub portion adapted to extend between the main side frame members 25; the sleeve portion being pivotally mounted on a suitable pin or trunnion 54 disposed through the frame-members.

rlhe upper end of the rail-engaging meniber 53 preferably terminates in spaced hub portions 55, 55, between which is pivotally mounted the threaded portion 56 of a toggle member 57; the threaded portion 56 being maintained in pivotal relation with the hub portions 55, of member 53 by a suitable bolt or pin 58. The toggle 57 comprises a hand-lever portion 59 and a l'nk 60; these two elements or portions being pivotally secured together at 6l, see Figures 3 and 4, while the link 60 is pivotally secured at. 62 to the side frame members 25. The threaded portion 56 screws into a tapped socket in lever portion 59; this construction being preferably employed to permit adjustment when necessary. The distended or operative position of the toggle 57 is maintained by suitable lugs formed on the frame members 25 and shown in dotted lines at 63 in Figure 4; the lugs preventing too far downward movement of the toggle and therefore preventing a downward breaking of the toggle at the pivotal connection 6l. lt is evident from the construction shown and described that when the toggle is in the position shown in Figures 3 and 4, railengaging member 53 will have been moved about its pivotal point 54 toward the web of the rail; while aforward swinging ofthe lever portion 59 ot' the toggle 57, that is a movement of the lever toward the left in Figure 4, will cause the toggle to break at 'the point 6l and exert an inward pull on the upper end of the rail-engaging member 53 and therefore induce the latter to swing into approximately a horizontal position at leest sufficient to permit the rail-engaging end of member 53, with the other elements rarried thereby, to move a distance away from the rail sufficient to permit said end rhe lower or free end of the rail-engaging.

member 53 is preferably of the spider formation shown in Figure 9, terminating at opposite sides in hub portions provided with threaded apertures adapted to receive the threaded rail-engaging elements 64; the elements 64 being preferably adjustable in the lower end of the niember 53 so as to enable proper abutting relation to be effected with the web of the rail A, as shown in Figure 9.

The lower central portion of the member 53 is adapted to be disposed substantially in alignment with the drill-spindle, but, ot course, on the opposite side of the rail; and this lower central portion is provided with an aperture which receives the tube or conduit 65. @ne end of the tube 65 receives the end of a conduit 66 which leads to the water or cooling medium containing tank 24. T he conduit 66, at a suitable point, is preferably provided with a needle-valve, as at 67, which I prefer to provide with a long stem having a suitable hand-wheel, as at 68, disposed at a point in proximity to the manually operated drill feed cont-rolling shaft 48 so as to be within easy reach of the operator. The end of the tube 65, disposed toward the rail, is provided with a metallic cup 69,

'which may be formed integral therewith or otherwise secured thereto. The periphery of the cup 69 is provided with a suitable washer or gasket, as disclosed at 70 in Figure 9. The cup portion 69 is surrounded by an outer cup-shaped member 7l which has sliding relation with the tube 65 of cup 69 and is maintained in operative position by a nut 72 which is threaded on tube 65. The member 7l is provided with an annular groove or shoulder on the inner peripheral edge adapted to engage with the gasket or washer 70, arranged about the periphery of cup 69, to force it into firm contact or liquid-holding relation with the web of the rail when the member 53 is moved into rail-engaging position, as shown in Figure 4. The cup 69, shown in Figures 4 and 9, receives the water. or other cooling medium, from conduit 66 and provides a pocket of water, or other suitable cooling' medium, at a point in contact with the web ot' the rail in direct alignment with the drill-bit, so that when the bit has completely penetrated the web, it will enter the water-pocket and become immersed and thus cause a proper cooling` of the bit. lt will be understood, of course, that when the rail-engaging member 53 is not in operative position, flow of water, or other cooling medium, through conduit 66 into cup 69 may be prevented by proper operation ot needlevalve 67. The worm 36 is rotated by means of suitf able gearing intermediate ot' the worm 56 the crank-shaft upon the removal oi' the cover 77 vof the crank-case, and gear 76 substituted tor gear 78, while gear 75 is substituted 'for gear 74C, so that gears 73 and 74l will occupy the positions ot gears`75 and 76, respectively. The crank-shaft of the motor is provided withl a suitable extension as at 78 on which is mounted a sleeve 79 which is keyed to the gear 76.' The sleeve 79 is secured to the crank-shaft extension 78 by means of -a suitable screw as at 80. The sleeve 79 extends somewhat beyond the crank-shaft extension 78 and is adapted to receive a suitable crank 8l arranged to have f slot and pin connection as indicated at 8 2 with .the sleeve when the crank 8l is forced inwardly against the action ot a suitable spring, as at 83, and rotated in a direction to induce co-operative relation `between the slot and pin, vwhereby sleeve 79 will induce rotation oit extension 78 and therefore rotation ot the crank-shatt, while at the same time rotatino' (rear 76 and through the medium ot the chain of gearing will cause rotation of worm 36 and therefore also of worm-gear 37 whereby the drillspindle 38 is rotated. The crank 8l may be held against accidental removal from the sleeve by a suitable set screw, as at 84, which, however, permits a slight sliding relation between the crank 8l and the sleeve. `With this construction, it is apparent that it it is desired to actuate the train ot gears 73-76 without cranking the motor, this may be accomplished by simply ren'ioving screw 80. Uponremoving screw 80, the train ot gearing may be actuated upon proper turning ot crank 8l, thus permitting the rotation ot the drill for certain small drilling operations tor which motive power is unnecessary.

The drill-spindle housing 85 is supported in the main frame members by means o-'l` suitable bosses formed on the sides and at opposite ends ot' the drill-housing 35 as 'for example at 85; these bosses extending into suitable openings formed in the main or side trame members 25.

When it is desired to use the drill as a vertical or bench drill, this may be accomplished by removing the rail-carriage and also removing the rail-engaging member or hook 53 upon removing the'trunnion or pin rnesto? 54 and the toggle mechanism through the removal of the journal or pivot pin 62 disposed through theside ltrame members 25. The motor 34 may then be swung into a position substantially parallel with the ydrillhousing upon removing the clamping bolts 3l, 32 and 33 which are disposed through the side frame members and engage with the opposite ends or'heads of the motor. This will permit the power drill to be readily clamped to the side of a suitable standard or pose indicated at 86, as shown in Figure ll; the post 86 being preferably of such construction as to extend between the two side frame members'25 and permit bolting or clamping thereto means of bolts, yas at 87, disposed through the apertures in the two frame members25 through which the trunnions or pins 54 were Previously disposed whereby the rail-engaging member 53 was pivotally supported. The removal ot the rail-engaging mechanism 53 will also remove the lubricant or cooling medium conveying conduit and rail web engaging cup 69, so that the drill is suitable tor any drilling operations desired. y

l/Vhen the device is employed as a rail drill any `suitable means may be employed for properly supporting the mechanism at thev side away from the rail during the drilling operation on the web of the rail, as for eX- ample by means of a suitable wedge-block 88, see Figures 8 and 4, which may be suitably suspended from the rail-carriage 20.

I have shown and described my improved convertible drill both as a rail drill and as a bench drill; the main frame membersv and clamping means bein so formed as to permit the movement o the engine or motor about its aXis so as to be disposed at the desired angularity; while the removable gear case or housin with the method of mountino ing the gears t erein, permits the obtaining oi' any desired speed ratio within the possibilities of gears adapted for said case or housing and the construction also permitting alteration or change of` the relation between the motor and the drill-spindle housing.

The construction shown and described l believe'to be a simple embodiment of the in` vention, but alterations may be made in cer-I tain details without, however, departing from the spirit of the invention.

` What I claim as my invention and wish to secure by Letters Patent is l. A drill of the character described, comprising a motor, a pair ot parallelly disposed frame members arranged at opposite ends ot the motor, said members being each provided with an opening adapted toreceive the adjacent end of the motor to permit the latter to swing about its axis, means whereby the motor may beheld in adjusted position, a drill-spindle lhousing suspended between said frame members, and interchangeable llO Lia-aso? power-transmitting means intermediate ot the crank-shaft of the motor and said drillspindle.

2. In a drill of the character described provided with a motor, a drill-spindle housing disposed in a direction perpendicular` and to one side of the longitudinal axis of the crank-shaft of the motor said housing being provided at one end with a worm gear, interchangeable power-transmitting means intermediate of the crank-shaft of the motor and said worm gear, an internally threaded sleeve rotatably mounted in said housing, an externally threaded member disposed within said sleeve, a drill-spindle mounted in said member, adjustable means in the end of said member for receiving the end thrust of the drill-spindle, and means whereby said sleeve may be rotated to control the drill-spindle.

3. A drill of the character described, comprising` a pair of pr-rallelly disposed 'trame members, supporting means adjustably secured to one end of the frame members 'for supporting the latter on the rail to be operated on, means pivotally secured between the ends of said frame members, and rail-engaging means adjustably mounted on said last mentioned means for engaging the side of the rail-web.

4. A drill of the character described, comprising a rail carriage of wheel-barrow construction, a pair of frame members disposed transversely of and suspended 'from said rail carriage, a portion of said frame members being indented to adapt them to extend across and rest on the rail to be operated on, a motor mounted between said frame members so as to swing about its axis, a drillspindle housing secured between the lower ends of said frame members and provided with a drill-spindle and means adjustably secured between the ends of the frame members for engaging with the rail to be operated on.

5. A drill of the character described, comprising a pair of parallelly arranged trame members adapted to extend across and rest upon the rail to be operated on, a motor secured between said frame members, a drill-spindle housing mounted between the frame members and provided with a drillspindle, a lubricant or cooling medium supply, a member pivotally secured to said frame members so as to swing vertically into juxtaposition with the rail to be operated on, rail-engaging means adjustably mounted in said member, and lubricant or cooling medium-holding means carried by said member, adapted to maintain a pocket or said medium at the opposite side of the rail-web in alignment wit-h said drill-spindle.

6. In a drill of the character described, a pair of parallelly arranged frame members adapted to be disposed across the rail to be operated on, a drill-spindle housing secured between said frame members and provided with a drill-spindle, means pivotally mounted between said frame members so as to swing` vertically, rail-engaging members adjustably secured to said means, a lubricant or cooling medium supply, and a cooling' medium holding member adjustably secured to said means and adapted to be flush with the web or the rail so as to maintain a supply of said medium at a point coincident with the point oi penetration of the rail by the drill-bit.

7. In a. drill ot the character described, supporting frame members, a drill-spindle housing mounted on said members and adapted to be disposed on one side of the rail to be operated on, and lubricant or cooling medium-holding means secured to said frame members and adapted to be disposed on the opposite side of the rail from said drill-spindle housing, said cooling mediumholding means comprising a cup member provided with a yielding rim adapted to provide liquid-holding relation with the web ci" the rail, said member having adjustable relation with said means and adapted to encircle the point or penetration of the rail bv the drill-bit.

8. In a drill of the character described, supporting frame members adapted to be disposed across` the rail to be operated on,

a member pivotally secured, intermediate of its ends, between said frame members so as to swing in a vertical direction, a lubricant or cooling medium-holding cup member provided with a tubular inlet adjust-ably secured to said pivoted member and having connection with a cooling medium or lubricant supply, and means whereby a {luidholdinp; relation between'the cup member and the web of the rail may be provided.

9. In a drill oit the character described, frame members, a member pivotally secured to the trame members so as to swing in a vertical direction, rail-engaging members adjustably secured to said pivoted member, a lubricant or cooling medium-holding member adjustably secured to said pivoted member and adapted to provide liquid-holding relation with the web of the rail to be operated on, and means secured to the frame members and one end of said pivoted member whereby the position of the latter with the rail-engaging members and said medium-holding member may be controlled. l0. In a drill of the character described provided with a pair of frame members, a drill-spindle housing secured between said frame members, an internally threaded sleeve rotatably mounted in said housing and provided with anti-friction thrust-bearings at opposite ends thereof, an externally threaded sleeve mounted within the irst mentioned sleeve, a drill-spindle secured within the second mentioned sleeve, and meanswhereby said spindle is caused 4vto move said second mentioned sleeve and adjustment forwear in the spindle provided.

11. In a drill of the character described, a pair of frame members arranged in paral- 4lel`spaced relation, a 'drill-spindle housing provided with oppositely disposed bosses adapted to to be secured to both' frame members one end of the housing being provided with closable openings in opposite sides thereof, an internallythreaded sleeve rotatably mounted in the housing and provided with anti-friction thrust-bearings at opposite ends thereof, a beveled gear secured to said sleeve, an Vexternally threaded sleeve mounted 1n the irst mentioned sleeve l'and adapted to be controlled thereby," a drillspindle rotatably mounted lin the second sleeve, adjustable means for taking the end thrust of the drill-spindle and to induce the spindle t'o move longitudinally with the second mentioned sleeve, and rotatable means mountable in either oi said openings in the 'Side walls of the housing and adapted to mesh withlthe bevel gear on the first mentioned v'sleeve whereby longitudinal movement of lthe second mentioned sleeve and drill-spindle may be induced.

12. A drill of the character described,

` `v`comprising a pair of frame members remov- .and adjustable toggle mechanism pivoted between said framemembers and to the end of said pivoted member whereby the position of the pivoted member may be controlled.

13. In a drill of the character described, a pair of iframe members arranged in parallel spaced relation, a member pivotally secured between the frame members so as to swing vertically, a` pair of rail-engaging members adjustably secured to said last mentioned member and adapted to engage with the side of the rail vopposite totliat of the drill-spindle, a. lubricant or cooling medium holding member adjustably secured to said pivoted memberl and disposed inte-rmediate of the rail-engaging members at a point coincident with the point of drill vpenetration, and means whereby the pivoted members may bel swung into and out of operative position. y y

14. In a drill of the character described, a supportingfframe, a'motor adjustably secured to said frame so as to permit the motor to swing about its aXis,vand means whereby the motor may be locked in its adjusted position relative to the supporting 'fra-me.

15. In a drill of the character described, a. rail carriage Voli' wheel-barrow construction, a pair of frame members removably secured to said carriage and arranged in parallel spaced relation transversely of the carriage, a portion of said frame members being indented to adapt them to extend across the rail to be operated on, supporting means adjustably secured to the frame members so as t0 `permit vertical and horizontalladjustof the rail,'adjustable rail-engaging means adapted to engage with the side 'of the rail opposite to that of the drill-spindle, and adjustable. toggle means vpivoted between ythe frame members whereby therail-engaging meansmay be controlled. 1

, CONRAD L. sTUEBER.

Witnesses: i

y Gr.A HEIDEMAN,

F. A. FL0RE1L.

Ament and arranged to engage withI the Ytop 

